5 counties exceed 100mm rainfall, Taipei highest; heavy rain expected to cause flooding

Taiwan is bracing for continued heavy rainfall as several areas have already surpassed 100 millimeters of cumulative precipitation. Taipei recorded the highest rainfall at 145 millimeters as of Sunday evening, June 8, 2026. The Central Weather Administration (CWA) forecasts that a stationary front and a strengthening southwest monsoon will bring significant rain to western and northeastern Taiwan over the next two days.

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Due to the stationary front and the strengthening southwest wind turning into a southwest airflow, the CWA launched 'enhanced operations for large-scale or more severe torrential rain events' this afternoon.

Forecasters predict heavy rain or localized torrential downpours, particularly in the mountainous areas of central and southern Taiwan, where rainfall could exceed the threshold for torrential rain. This increased precipitation raises concerns about potential waterlogging and flooding. The CWA has activated enhanced operational procedures for large-scale or severe torrential rain events.

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Tonight to Wednesday, the front will gradually pass, and the southwest airflow will affect the areas. There will be short-duration heavy rainfall. Western and central-southern Taiwan, and the mountainous areas of Yilan and eastern Taiwan will experience heavy rain or localized torrential downpours. Especially the mountainous areas in central and southern Taiwan will have rainfall of torrential rain level or above, and there may be waterlogging.

Residents are advised to exercise caution and implement flood prevention measures. Mountainous regions are expected to see considerable rainfall accumulation, increasing the risk of landslides, rockfalls, and overflowing rivers. The public is urged to avoid activities in mountainous areas or near streams and to be mindful of traffic safety during heavy downpours. Coastal areas may also experience increasing wave heights and strong gusts of wind.

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Residents are reminded to be vigilant and take flood prevention measures. Especially in mountainous areas, considerable rainfall is expected, which may lead to landslides, rockfalls, and overflowing rivers. Avoid activities in mountainous areas or near rivers. Be aware of traffic safety when encountering heavy rainfall.